vauxhall Workshop Repair Guides

Vauxhall Workshop Service and Repair Manuals

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C-029 No Communication with Electrohydraulic Hardtop > < C-027 No Communication with Open & Start

Astra H

C-028 - No Communication with SAC

Test

Work Order Description

Nominal Value
T001

Check: Interruption of Voltage Supply Circuit
  • Ignition OFF
  • All consumers turned off
  • Disconnect wiring harness connector from:
    A1_A14 Control Unit - Climate Control
    (Wiring Harness Connector XC42 )
    &
    Diagnostic tester
  • Ignition ON
  • Measure voltage between the following terminals:
    A1_A14 Control Unit - Climate Control
    Wiring harness connector (wiring harness side) terminal 15 (XC42)
    &
    Ground

greater than 11 V
Voltage Measurement Current Value: V
Yes: No:
T002

Check: Interruption of Voltage Supply Circuit
  • Measure voltage between the following terminals:
    A1_A14 Control Unit - Climate Control
    Wiring harness connector (wiring harness side) terminal 9 (XC42)
    &
    Battery voltage

greater than 11 V
Voltage Measurement Current Value: V
Yes: No:
T003

Check: Vehicle Configuration

Is the following information correct for the actual vehicle?

Vehicle with REC (Rear Electronic Module)
Yes: No:
T004

Check: Interruption of Voltage Supply Circuit
  • Ignition OFF
  • Remove electrical component from socket:
    FR4 Fuse
  • Ignition ON
  • Measure voltage between the following terminals:
    FR4 Fuse
    Input contact
    &
    Ground

greater than 11 V
Voltage Measurement Current Value: V
Yes: No:
T005

Check: Interruption of Voltage Supply Circuit
  • Ignition OFF
  • Remove electrical component from socket:
    FE16 Fuse
  • Ignition ON
  • Measure voltage between the following terminals:
    FE16 Fuse
    Input contact
    &
    Ground

greater than 11 V
Voltage Measurement Current Value: V
Yes: No:


Result

Cause Of Fault
E001 Result: Interruption
  • Circuit interruption between:
    A1_A14 Control Unit - Climate Control
    Wiring harness connector (wiring harness side) terminal 2 (XC42)
    &
    A63 Control Unit - Airbag
    Wiring harness connector (wiring harness side) terminal 38(XC17)

or

  • Defective component:
    A1_A14 Control Unit - Climate Control
    or
    A63 Control Unit - Airbag

Important:

Reset the concerned control unit with the diagnostic tester before replacing it. In order to do that, call up the "RESET" function from the PROGRAMMING menu of the current system on the diagnostic tester.
E002 Result: Interruption
  • Circuit interruption between:
    A1_A14 Control Unit - Climate Control
    Wiring harness connector (wiring harness side) terminal 9 (XC42)
    &
    Ground
E003 Result: Interruption
  • Circuit interruption between:
    X131 Rear Electronic Module
    Wiring harness connector (wiring harness side) terminal 25(XR3)
    &
    A1_A14 Control Unit - Climate Control
    Wiring harness connector (wiring harness side) terminal 15 (XC42)
E004 Result: Defective Component
  • Defective component:
    X131 Rear Electronic Module

Important:

Reset the concerned control unit with the diagnostic tester before replacing it. In order to do that, call up the "RESET" function from the PROGRAMMING menu of the current system on the diagnostic tester.
E005 Result: Interruption
  • Circuit interruption between:
    X125 Underhood Electronic Module
    Socket Terminal 9 (XE2)
    &
    A1_A14 Control Unit - Climate Control
    Wiring harness connector (wiring harness side) terminal 15 (XC42)
E006 Result: Defective Component
  • Defective component:
    X125 Underhood Electronic Module

Important:

Reset the concerned control unit with the diagnostic tester before replacing it. In order to do that, call up the "RESET" function from the PROGRAMMING menu of the current system on the diagnostic tester.





C-029 No Communication with Electrohydraulic Hardtop > < C-027 No Communication with Open & Start